Charles bordick



(N0 Model.)

0. BURDIOK.

SHEARS FOR CUTTING FLAT AND, ROUND METAL.

No. 248,996. Patented Nov. 1,1881.

Q i'iest M NITED STATES PATENT CHARLES BURDICK, OF PHILADELPHIA,PENNSYLVANIA, ASSIGNOR TO GUSTAVUS JOSEPHS, OF SAME PLACE.

SHEARS FOR CUTTING FLAT AND ROUND METAL.

SPECIFICATION forming part of Letters Patent No. 248,996, dated November1, 1881,

Application filed'June 7, 1881. (No model.)

To all whom it may concern:

Be it known thatI, OHARLEsBURDIoK, acitizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inShears for Outting Flat and Round Metal; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to the letters or figures of reference marked thereon, which form apart of this specification.

This invention is designed to combine in one tool or machine facilitiesfor cutting the two descriptions of metal named.

In the accompanying drawings, Figure l is a side elevation of theinvention. Fig. 2 is a vertical section on the line mm, Fig. 1. Fig. 3is a perspective view of a detail of the invention, and Fig. la top orplan view of the same art.

Similar letters of reference indicate similar parts in the respectiveviews.

A is a stationary arm, which preferably is placed in a substantiallyhorizontal position, and mounted upon a foot or stand, A which may beheld in a vise or secured to a bench or table by belts or screws. On thearm A is formed one of the jaws for cutting flat metal, as shown at a,at which point it is provided with a suitable steel cutter, I), insertedand attached in the usual manner. At A is the fulcrum of the movable armor lever B, upon which arm is formed the other cutting-jaw, a, alsoprovided with an inserted steel cutter, b, in the usual manner. At theopposite end of the stationary arm A is a shaft, 0, upon which ismounted a segmental pinion, G, which carries an arm or lever, G,inserted in a socket formed upon the pinion. The corresponding end ofthe movable lever B is provided with a segmental rack, B, which engageswith the pinion G, and operates by the partial revolution of the pinionto open and close thejaws a and a. Each end of the rack is provided witha stop, b, which, by coming in contact with the socket in either theupper or lower position of the lever-handle, prevents a disengagement ofthe pinion from the rack. At a point between the fulcrum A and thegearing, as

perforated or bored out to receive the cylindrical steel die I). The dieis provided with perforations of sizes to suit different gages ordiameters of round iron or wire, as shown. The movable arm B is providedwith an inserted steel shearin g-plate, E, which rests within adovetailed recess formed in the arm. The shearing-plate E is preferablymade of wedge or taper form to facilitate its withdrawal from its recesswhen desired. The upper edge of the shearing-plate E is provided with asemicircular groove. The cylindrical die D is secured in the arm A by aset-screw, d. The die is provided with a projection having flattenedsides, to enable it to be revolved so as to bring any one of itsperforations opposite to andto register with the semicircular groove 0of the shearing-plate E.

By operating the movable jaw A through the'medium of the gearing G andB, the cutting devices for both flat and round metal are put in action.These may be used either separately or together. If desired, differentshearing-plates E, with semicircular grooves of various sizes, may beused for different dimensions or gages of round iron or wire; but thisis not considered essential.

I do not claim, broadly, shears for cutting flat and round iron; neitherdo I claim in such tools perforated dies or cutters for cutting roundiron of different sizes, my invention consisting in the construction ofparts and their combination as follows, viz:

In metal-shears, the stationary arm A, pro- J vided with the cylindricaldie D, having per-

